// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#pragma once

#include <nebula/future/thread_pool.h>

namespace nebula {

/// An executor which synchronously runs the task as part of the spawn_real call.
class MockExecutor : public internal::Executor {
 public:
  int get_capacity() override { return 0; }

  turbo::Status spawn_real(internal::TaskHints hints, turbo::FnOnce<void()> task, StopToken,
                   StopCallback&&) override {
    spawn_count++;
    std::move(task)();
    return turbo::OkStatus();
  }

  int spawn_count = 0;
};

/// An executor which does not actually run the task.  Can be used to simulate situations
/// where the executor schedules a task in a long queue and doesn't get around to running
/// it for a while
class DelayedExecutor : public internal::Executor {
 public:
  int get_capacity() override { return 0; }

  turbo::Status spawn_real(internal::TaskHints hints, turbo::FnOnce<void()> task, StopToken,
                   StopCallback&&) override {
    captured_tasks.push_back(std::move(task));
    return turbo::OkStatus();
  }

  std::vector<turbo::FnOnce<void()>> captured_tasks;
};

}  // namespace nebula
